In the remote villages of Ecuador, 100 very small people may hold the key to a huge medical breakthrough.They all suffer from Laron Syndrome, an incredibly rare genetic disorder that stops them from growing taller than 4 feet but also seems to protect them against cancer and diabetes and maybe even heart disease and Alzheimer's."There's only one patient that has died of cancer among all of the subjects. And that is fascinating," said Dr. Jaime Guevara-Aguirre, who has been studying the Laron population for 30 years.